Trouble with Exercise 3

[rimmonhouse]

I don't understand the program in Exercise 3.  Why is the letter d enclosed in a pair of single quotations, while c is not?  I'm not sure what lesson the program is supposed to illustrate.  Thanks in advance!

[skochan]

The program is supposed help you understand how to define a char constant, a char variable, and how to assign the former to the latter.   The character in single quote is a char value.  It is assigned to the variable c with a statement like this:

Code: (Objective-C)

c = 'd';

Cheers,

Steve